src/frontends/qt3/QCommandBuffer.C

   1 /**
   2  * \file QCommandBuffer.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 // Qt defines a macro 'signals' that clashes with a boost namespace.
  14 // All is well if the namespace is visible first.
  15 #include "QtView.h"
  16
  17 #include "QCommandBuffer.h"
  18 #include "QCommandEdit.h"
  19 #include "qt_helpers.h"
  20
  21 #include "controllers/ControlCommandBuffer.h"
  22
  23 #include "support/filetools.h"
  24
  25 #include <qlistbox.h>
  26 #include <qlayout.h>
  27 #include <qtooltip.h>
  28 #include <qpushbutton.h>
  29
  30 using lyx::support::libFileSearch;
  31
  32 using std::vector;
  33 using std::string;
  34
  35 namespace lyx {
  36 namespace frontend {
  37
  38 namespace {
  39
  40 class QTempListBox : public QListBox {
  41 public:
  42         QTempListBox()
  43                 : QListBox(0, 0,
  44                            WType_Modal | WType_Popup | WDestructiveClose) {
  45                 setHScrollBarMode(AlwaysOff);
  46         }
  47 protected:
  48         void mouseReleaseEvent(QMouseEvent * e) {
  49                 if (e->x() < 0 || e->y() < 0
  50                     || e->x() > width() || e->y() > height()) {
  51                         hide();
  52                 } else {
  53                         // emit signal
  54                         selected(currentText());
  55                 }
  56         }
  57
  58         void keyPressEvent(QKeyEvent * e) {
  59                 if (e->key() == Key_Escape) {
  60                         hide();
  61                         return;
  62                 }
  63                 QListBox::keyPressEvent(e);
  64         }
  65 };
  66
  67 } // end of anon
  68
  69
  70 QCommandBuffer::QCommandBuffer(QtView * view, QWidget * parent, ControlCommandBuffer & control)
  71         : QWidget(parent), view_(view), controller_(control)
  72 {
  73         QPixmap qpup(toqstr(libFileSearch("images", "up", "xpm")));
  74         QPixmap qpdown(toqstr(libFileSearch("images", "down", "xpm")));
  75
  76         QVBoxLayout * top = new QVBoxLayout(this);
  77         QHBoxLayout * layout = new QHBoxLayout(0);
  78
  79         QPushButton * up = new QPushButton(qpup, "", this);
  80         QToolTip::add(up, qt_("Previous command"));
  81         connect(up, SIGNAL(clicked()), this, SLOT(up()));
  82         QPushButton * down = new QPushButton(qpdown, "", this);
  83         QToolTip::add(down, qt_("Next command"));
  84         connect(down, SIGNAL(clicked()), this, SLOT(down()));
  85
  86         edit_ = new QCommandEdit(this);
  87         edit_->setMinimumSize(edit_->sizeHint());
  88         edit_->setFocusPolicy(ClickFocus);
  89
  90         connect(edit_, SIGNAL(escapePressed()), this, SLOT(cancel()));
  91         connect(edit_, SIGNAL(returnPressed()), this, SLOT(dispatch()));
  92         connect(edit_, SIGNAL(tabPressed()), this, SLOT(complete()));
  93         connect(edit_, SIGNAL(upPressed()), this, SLOT(up()));
  94         connect(edit_, SIGNAL(downPressed()), this, SLOT(down()));
  95
  96         layout->addWidget(up, 0);
  97         layout->addWidget(down, 0);
  98         layout->addWidget(edit_, 10);
  99         top->addLayout(layout);
 100 }
 101
 102
 103
 104 void QCommandBuffer::focus_command()
 105 {
 106         edit_->setFocus();
 107 }
 108
 109
 110 void QCommandBuffer::cancel()
 111 {
 112         view_->centralWidget()->setFocus();
 113         edit_->setText("");
 114 }
 115
 116
 117 void QCommandBuffer::dispatch()
 118 {
 119         controller_.dispatch(fromqstr(edit_->text()));
 120         view_->centralWidget()->setFocus();
 121         edit_->setText("");
 122         edit_->clearFocus();
 123 }
 124
 125
 126 void QCommandBuffer::complete()
 127 {
 128         string const input = fromqstr(edit_->text());
 129         string new_input;
 130         vector<string> comp = controller_.completions(input, new_input);
 131
 132         if (comp.empty() && new_input == input) {
 133         //      show_info_suffix(qt_("[no match]"), input);
 134                 return;
 135         }
 136
 137         if (comp.empty()) {
 138                 edit_->setText(toqstr(new_input));
 139         //      show_info_suffix(("[only completion]"), new_input + ' ');
 140                 return;
 141         }
 142
 143         edit_->setText(toqstr(new_input));
 144
 145         QTempListBox * list = new QTempListBox;
 146
 147         // For some reason the scrollview's contents are larger
 148         // than the number of actual items...
 149         vector<string>::const_iterator cit = comp.begin();
 150         vector<string>::const_iterator end = comp.end();
 151         for (; cit != end; ++cit) {
 152                 list->insertItem(toqstr(*cit));
 153         }
 154
 155         // width() is not big enough by a few pixels. Qt Sucks.
 156         list->setMinimumWidth(list->sizeHint().width() + 10);
 157
 158         list->resize(list->sizeHint());
 159         QPoint pos(edit_->mapToGlobal(QPoint(0, 0)));
 160
 161         int y = std::max(0, pos.y() - list->height());
 162
 163         list->move(pos.x(), y);
 164
 165         connect(list, SIGNAL(selected(const QString &)),
 166                 this, SLOT(complete_selected(const QString &)));
 167
 168         list->show();
 169         list->setFocus();
 170 }
 171
 172
 173 void QCommandBuffer::complete_selected(QString const & str)
 174 {
 175         QWidget const * widget = static_cast<QWidget const *>(sender());
 176         const_cast<QWidget *>(widget)->hide();
 177         edit_->setText(str + ' ');
 178         edit_->setFocus();
 179 }
 180
 181
 182 void QCommandBuffer::up()
 183 {
 184         string const input(fromqstr(edit_->text()));
 185         string const h(controller_.historyUp());
 186
 187         if (h.empty()) {
 188         //      show_info_suffix(qt_("[Beginning of history]"), input);
 189         } else {
 190                 edit_->setText(toqstr(h));
 191         }
 192 }
 193
 194
 195 void QCommandBuffer::down()
 196 {
 197         string const input(fromqstr(edit_->text()));
 198         string const h(controller_.historyDown());
 199
 200         if (h.empty()) {
 201         //      show_info_suffix(qt_("[End of history]"), input);
 202         } else {
 203                 edit_->setText(toqstr(h));
 204         }
 205 }
 206
 207
 208 #if 0
 209 void XMiniBuffer::show_info_suffix(string const & suffix, string const & input)
 210 {
 211         stored_input_ = input;
 212         info_suffix_shown_ = true;
 213         set_input(input + ' ' + suffix);
 214         suffix_timer_->start();
 215 }
 216
 217
 218 void XMiniBuffer::suffix_timeout()
 219 {
 220         info_suffix_shown_ = false;
 221         set_input(stored_input_);
 222 }
 223
 224 #endif
 225
 226 } // namespace frontend
 227 } // namespace lyx